Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8470406 | Method of spray application, and spray apparatus, for bentonite material | Ichizo Kobayashi, Takeshi Sasakura, Toshiyuki Tanaka, Makoto Nakajima, Masaru Toida | 2013-06-25 |
| 4688648 | Method of and apparatus for crushing earth under the ground | Taro Ikeda, Teruo Yahiro, Hiroshi Yoshida, Kenji Nishi, Yoichi Kume +1 more | 1987-08-25 |